/*
 * Copyright (C) 2023 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.systemui.util.time

import kotlin.contracts.ExperimentalContracts
import kotlin.contracts.InvocationKind
import kotlin.contracts.contract

/**
 * Executes the given [block] and returns elapsed time using provided [systemClock] in milliseconds.
 */
@OptIn(ExperimentalContracts::class)
inline fun measureTimeMillis(systemClock: SystemClock, block: () -> Unit): Long {
    contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
    val start = systemClock.currentTimeMillis()
    block()
    return systemClock.currentTimeMillis() - start
}
